<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>购物车</title>
	<%-- 静态包含base标签，css样式，jQuery文件 --%>
	<%@include file="/pages/common/head.jsp"%>
	<script type="text/javascript">
		$(function () {
			//给删除绑定单击事件
			$("a.deleteItem").click(function () {
				return confirm("你确定要删除【"+ $(this).parent().parent().find("td:first").text() +"】吗？")
			})

			$("#clearItem").click(function () {
				return confirm("你确定要清空购物车吗？")
			})

			//给输入框，绑定失去焦点事件 === change 内容发生改变事件，内容发生改变就相应
			$(".updateCount").change(function () {
				//获取商品名称
				var name = $(this).parent().parent().find("td:first").text();

				var id = $(this).attr("bookId");
				//获取商品数量
				var count = this.value;
				if (confirm("你确定要将【"+ name +"】商品数量修改为：" + count + "吗？")){
					//发起请求。给服务器保存修改
					location.href = "http://localhost:8080/book/cartServlet?action=updateCount&count=" + count+ "&id=" + id;
				}else {
					//defaultValue：表单项的dom对象属性。它表示默认的value属性值
					this.value = this.defaultValue;
				}

			})
		})
	</script>
</head>
<body>
	
	<div id="header">
			<img class="logo_img" alt="" src="static/img/logo.gif" >
			<span class="wel_word">购物车</span>
		<%--静态包含，登录成功之后的菜单--%>
		<%@include file="/pages/common/login_success_menu.jsp"%>
	</div>
	
	<div id="main">
	
		<table>
			<tr>
				<td>商品名称</td>
				<td>数量</td>
				<td>单价</td>
				<td>金额</td>
				<td>操作</td>
			</tr>

			<c:if test="${empty sessionScope.cart.items}">
				<%--如果购物车为空的情况--%>
				<tr>
					<td colspan="5"> <a href="index.jsp"> 亲，当前购物车为空! 快和小伙伴们去浏览商品吧!!!</a> </td>
				</tr>
			</c:if>
			<c:if test="${not empty sessionScope.cart.items}">
				<%--如果购物车为非空的情况--%>
				<c:forEach items="${sessionScope.cart.items}" var="entry">
					<tr>
						<td>${entry.value.name}</td>
						<td>
							<input class="updateCount" style="width: 40px"
								   bookId="${entry.value.id}"
								   type="text" value="${entry.value.count}">
						</td>
						<td>${entry.value.price}</td>
						<td>${entry.value.totalPrice}</td>
						<td><a class="deleteItem"  href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
					</tr>
				</c:forEach>
			</c:if>
			
		</table>
		<%--如果购物车 是非空才输出下面的内容--%>
		<c:if test="${not empty sessionScope.cart.items}">
			<div class="cart_info">
				<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
				<span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
				<span class="cart_span"><a id="clearItem" href="cartServlet?action=clear">清空购物车</a></span>
				<span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
			</div>
		</c:if>
	
	</div>
	
	<%-- 静态包含页脚内容 --%>
	<%@include file="/pages/common/footer.jsp" %>
</body>
</html>